Switch



M. D. BROWN.

SWITCH.

APPLICATION FILED nc.21. 1915.

'1 1 94, 1 34. Patented Aug. 8, 1916.

' larly MIDDLETON D. BROWN, OF WATERLOO, IOWA.

SWITCH.

Specification of Letters Patent.

Patented Aug. 8, 1916.

Application filed December 21, 1915. Serial No. 68,049.

To all whom 2t may concern:

Be it known that I, MIDDLETON D. BROWN, a citizen of the United States, residing at \Vaterloo, in the county of Blackhawk and State of Iowa, have invented certain new and useful Improvements in Switches; and

I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in switches and more particuto that type of switch adapted for use in connection with pocket flash lights, and the principal object of the invention is to provide a switch which insures positive action of the contacts thereby insuring a continuous flow of current through the light and preventing the light from flickering or accidentally going out.

Another object of the invention is to provide a means for locking the switch in its inoperative position to avoid the possibility of the device being accident-ally lighted thereby using the power without any necessity therefor.

With these and other objects in View, the

invention consists in the novel combination and arrangement of parts which will be fully set forth in the following specification and accompanying drawings, in which:'

Figure 1 is a plan View from the exterior of a flash light showing this improved switch applied thereto. Fig. 2 is a longitudinal sectional view on line 22 of Fig. 1. Fig. 3 is a transverse sectional viewon line 33 of Fig. 1, and Fig. 4 is a View in detail of the contact and illustrating the wiring diagram of the device.

Referring to the drawings, the numeral 1 designates a flash light of the ordinary character provided with the usual lens 2. The switch used in connection with the device is designated generally by the numeral 3 and comprises the transversely U-shaped metallic body 4 having the attaching wings 5 formed integral with the ends of the arms thereof. These attaching wings are provided with suitable openings for the reception of the attaching screws 6 by means of which they are secured to the exterior of the flash light casing as clearly shown in Fig. 1. The opposite ends of the U-shaped body L are turned downwardly as at 7 t provide stops to prevent the slide from passing beyond a predetermined point.

The slide above referred to is designated generally 8 and comprises the shaft 9 having formed thereon the enlarged thumb piece 10 which projects upwardly through a slot 11 in the body 4: and provides a means by which the shaft may be moved. A suitable enlarged head 11 is formed at one end of the slide and is adapted for engagement with the clip designated by the numeral 12 com-- prising the U-shaped body 13 having the ends of the thumbbent inwardly as at 14 and again bent outwardly as at 15 so as to engage the head 11 and hold the same in the position shown in Fig. 1. When in this position it will be seen that the current through the light will be" discontinued and due to the fact that the inwardly bent portions 14 engage the rear walls of the head, it will be seen that accidental movement of the shaft 9 is prevented. The end of the shaft 9 opposite the head 11 is provided with a tapered portion 16 which is adapted to engage the contact 17 comprising a U-shaped body 18 having the ends of its arms formed with the inwardly ofiset parallel contact arms 19, the outer ends of which are bent outwardly as at 20 to form guides in which the portion 16 slides.

It will be apparent from the foregoing that in use the current passes from the batterythrough the suitable conductor to the body 4. It will thus be seen that the frictional contact between the body and the shaft 9 will cause said shaft when'the point 16 is moved into en gagement with the contact arms 19 to complete the circuit through the switch 17 and to the lamp bulb in the forward end of the casing by means of a suitable conductor and thence back to the opposite contact of the battery through the center contactv to the lamp. It will thus be seen that a steady flow of current through the light is provided which will avoid the flickering and necessity of holding the thumb on the contact during the time the light is used.

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that such changes may be made in the combination and arrangement of parts as will fall within. the spirit and scope of the appended claim.

usual spring and into a.

ing a means by which the sliding contact is moved and a head at the end of the shaft 1| opposite the contact end adapted to enter the clips to hold the sliding contact away from the stationary contact when the device is not in use.

In testimony whereof I affix my signature 20 in presence of two witnesses.

MIDDLETON D. BROWN.

Witnesses:

J. E. BRUGHER, H. C. SCHULTZ. 

